Hoisting mechanism



July 1l, 1939. J. F. JoY

HOISTING MECHANISM- original Filed July 1, 1935 4 Sheets-Sheet 1 IN V ENTOR. (Je/Uffy. A...) 10mn" A TTORNEY.

July ll, 1939. J, JOY 2,165,895

- HOISTING MEcHANIsM Original Filed July 1, 1935 4 Sheets-Sheet 2INVENTOR.

JSQ/QZ''Jy BY Ml',

ATTORNEY.

July- 11, 1939. J. F. .JOYA 2,165,895 L HoIsTING MEcHANisM OriginalFiled July 1,'1935 21 Sheets-Sheet 3 INVENTOR.

ATTORNEY.

-July 11, 193.9. J. F. JOY

5 I HOISTING MECHANISM Original Filed July l, 1935 4 Sheets-Sheet 4 NNN. @SMN INVENTOR.

BY Aw: d' mm.

ATTORNEY.

Patented July 1l, I1939v 2,165,895 nois'rmG MECHANISM Joseph F. Joy,Claremont, N. n., minor to sullivan Machinery Company, a corporation ofhnsetts Original application July l, 1935, ySerial No. 29,308. Dividedand this application March 19,

1.936, Serial-No.' 69,696 v -s claims. (ci. 25a-16s) v generallycomprising a self-propelledbase l hav'- This invention relates tohoisting mechanisms. and more particularly to`improvements in hoistingmechanisms of the portable tractor mounted type.

An object of this invention is to provide an improved portable hoistingmechanism. A n. other object is to provide a'n improved portablehoisting mechanism of the self-propelled type whereby the hoist may bemaneuvered with facility into different operating positions and. may bereadily transported by its own self-propelling mechanisml from oneworking place to another. A further object is to provide an improvedhoisting mechanismY having a novel arrangement 'of the hoisting drumsand improved driving and controlling means for the drums; A stillfurther object is to provide an improved hoisting mechanism of thetractor tread supported and propelled type. These and other objects andadvantages of the invention will, however, hereinafter more fullyappear.

This application is a division of my copending application Ser. No.29,308, iiled July 1, 1935, `and patented April 12, 1938, No. 2,113,760.

In the accompanying drawings there is'shown for purposes o1'illustration one form which the invention may assume in practice.

In these drawings:

Fig. 1 is a' plan view of the illustrative form of the improved'self-'propelled hoisting mechanism.

Fig. 2 is a side elevationalv view of the hoisting mechanism shown inFig. 1, with a portion of the casing broken away to illustrate detailsof the interior construction.

Fig. 3 is an enlarged view in longitudinal section taken substantiallyon line 3 3 of Fig. 1.

` Fig. 4 is a cross sectional view taken substantially on line l-l'ofFig. 3.

Fig. 5 is a horizontal sectional view taken substantially on line 5-5 ofFig. 3.

Fig. 6 is an enlarged vertical sectional view illustrating the drumclutch control mechanism shown in Fig. 3, the view taken substantiallyon line 6 6 0f Fig. 5.

Fig. 7 is a horizontal sectional view takensubstantially on linel--l ofFig. 3.

Fig. 8 is a diagrammatic view showing the improved hydraulic iluidsystem and the associated control means.

.guided endless track-laying chains Il.

ing mounted thereon hoisting drum means generallydesignated l. The basel comprises a body 5 mounted on and supported by endless track-layingtreads 6, 5 arranged at' opposite sides of the body. 'I'he tractortreads'comprlse tread frames 'l rigidly secured `to the sides of thebody 5 and embodying upper and lowerguide members I and A9 havingguideways in which are 'I'hese track-laying chains are herein `oi theblock type carrying cleat-like plates engageable with the mine iioor forpropelling the hoist. The forward portions of these endless tractorchains are guided by guide sprockets Il journaled on adjustable bearingblocks I2 mounted in longitudinal guideways I3 formed on the tread sideframes 1, and these bearing blocks are adjustable longitudinally withintheir guideways by means of adjusting screws I 4. By adjusting thescrews It the bearing blocks I2 may be slid in their'guideways to movethe guide sprockets II longitudinally with respect to the tread frames1, thereby to take up a'ny undue slack in the chains. The rearwardportions of the tread chains engage drive sprockets I5, I5 having theirhubs keyed to the projecting ends of alined rear axles Ii and I'Ijournaled in bearings I8 supported by bearing supports i9 attached to adiilerential housing 29 secured to the hoist body 5. Arranged withinthis differential housing is a differential 2i of a standard automotivedesign including a rotatable support 22 carrying bevel planet gears 2lmeshing with coaxial bevel gears 2l and 25 fixed to the alined axles I5and I'l, respectively, and the support 22 is driven by a worm wheel 2lfixed thereto andmeshing with the teeth of a drive worm 21. As shown inFig. 3, the drive worm 21 is lixed to a longitudinal shaft 28 journaledwithin bearings 29 supported within the dili'erential housing 2l.Arranged centrally within the hoist body 5 is a motor 2l, hereinpreferably of the reversible electric typ. having its powershaft 3|horizontally disposed and extending longitudinally of the hoist body.Connected to the rear end of the motor power shaft by a coupling 32 of aconventional design'is a planetary, slip controlled change speedmechanism generally designated Il, likewise of a standard automotivedesign, and embodying irictionally controlled planet gears for effectingdrive of a shaft 34 at high, low and medium speeds, under frictionalcontrol at each speed, and also reverse irictionally controlled drive ofthe shaft Il. As this planetary transmission mechanism is of a levertype operating mechanism 43 controlled by a/hand lever 44. From theforegoing it will be evident that the track-laying treads may be drivenby the motor 3l under frictional control at three forward speeds and inreverse by the planetary transmission'mechanism 33, clutch 35,

shaft 35, spur gearing 31, 35, worm gearing 21,

25, diiferential gears 23, 24, 25 and the alined axles I and I1 drivingthesprockets- I5, I5. By regulating the brake bands 4I and 42 the driveof the track-laying treads may be controlled to effect speeding up ofthe drive of one tread and `slowing down of the other, thereby to venable steering of the hoist as it is propelled yover the mine door in awell known manner. It `wi1l 4thus be seen that the hoist isself-propelled and maybe moved and guided by the track-laying :treadsduring propulsion thereof over the mine iloor. f

`The hoisting means generally designated 4 embodies a pair of relativelyrotatable hoisting or haulage drums 45 and 49 arranged in superimposedcoaxial relation on the upper portion of thehoist body, and wound onthese drums are portions -5II and 5I of an endless drag line or haulagecable or rope, as shown in Fig. 2. These drums arejournaled for rotationabout a vertical axis on bearings supported by a centrally locatedtubular shaft 52 in turn journaled in bearings supported within a frontgear housing 53 attached to the front end of the hoist body 5. Disc'clutches 54, 55 are provided for connecting the drums 45 and 49 to thetubular shaft 52.

KKeyed to the forward end of the motor power shaft 3I is a spurl pinion55 meshing, as shown most clearly in Fig; 5, witha spur gear 51 keyed toa longitudinal shaft 55 suitably journaled in the gearing housing 53.Fixed to this shaft is a worm 55 meshing with a horizontal worm wheel 55arranged within the gearing housing and xed to the lower end of thevertical shaft 52 (see also Fig. 6).

The operating means for the disc clutches 54 and 55 comprises, as shownmost clearly in Fig. 6, a servo-motor having a hydraulic cylinder IIarranged coaxially with and projecting within the tubular shaft 52 (seealso Fig. 3). This cylinder contains a vertically reciprocable piston 52having ilxed thereto a tubular rod 53 projectingupwardly throughthepacked upper head 54 of the cylinder and threadedly secured at its upperend within a block 55 above the upper hoisting drum. Also xed within thepiston 52 and extending coaxially through the tubular rod 53 is atubular rod 55 having its upper end threadedly flxed within an upperblock 51. The block 51 has a depending cylindrical projection 55 whichfits tightly in a bore formed in the lower block 55, thereby to providean upper closure for a chamber 59 in the lower block. l'brmed in theupper block is a chamber 15 with which the inner tubular rod 53communicates. Hydraulic pressure is adapted to be supplied to thechambers 5l and 10 in the blocks in a manner to be later described.'I'he clutches 54, 55 are provided with a clutch applying plate 1Ihaving engaging its opposite surfaces ball thrust bearings 12, 13,l andsurrounding the tubular rod 53 is a tubular sleevev14, while engagingthe lower thrust bearing 13 and fixed to the tubuthe inner tubular rod66 and through an axial opening 19 in the piston to thel lower end ofthe hydraulic cylinder, the piston 62 is moved upwardly to shift theclutch applying plate 1I in a direction to apply the upper clutch 54 toconnect the, upper drum 48 to the drive shafty 52. When hydraulicpressure is supplied from the chamber 59 through the tubular rod 5,3 andopenings 90 in the lower end of the rod to the upper end of thehydraulic cylinder, the piston 62 is moved downwardly to move the clutchapplying plate 1| in a direction to apply the lower clutch 55 to connectthe lower drum 49 to the drive shaft'52. It is accordingly evident thatthe hoisting drums 48 and 49 may be selectively connected in drivingrelation with the motor 30 and are driven from the 4motor through thespur 'tical drive shaft 52.

In this illustrative construction, mounted within the rearward portionof the hoist body 5 is a controller and resistance box 85 connected byan electrical conductor cable 55 to a switch and fuse box 31, and anelectrical conductor cable 55 to the motor 39. Arranged at oppositesides of the hoist body and rigidly xed within the side tread framesbetween the latter and the diil'erential housing is a pair of hydraulicanchor jacks 89 each comprising a vertical hydraulic cylinder 99containing a vertically reciprocable piston .9| having an upwardlyextending piston rod 92 passing through a packed opening in the uppercylindenhead 93. The upper end of the piston rods 92 are provided withabutment engaging points 94 for engagement with a suitable extraneousabutment, i'or instance the mine roof, for rigidly jacking the hoist ina stationary operating position against the mine floor.

'I'he means for supplying hydraulic pressure to the jack cylinders 90and the operating cylinder 5I for the drum control clutches comprises ahydraulic pump 95, preferably of a conventional triplel rotortype,attachedto the gear housing 53 and having a pump chamber 91 containingintermeshing pump rotor gears 95, one of which is keyed to theprojecting end of the longitudinal drive shaft 55, as shown in Fig. 5.The chamber within the gear housing 53 provides a reservoir 99 forcontaining a liquid, and this pump is adapted to pump liquid underpressure from the reservoir through suitable passages and conduits, tobe later described, to the hydraulic cylinders above referred to. Nowreferring to the hydraulic fluid system and the associated control meansshown in Figs. 8 and 9, it will be observed that the discharge chambersof the rotors of the pump 55 are connected through conduits |00 and LUIrespectively, to a by-pass valve device |02,

` 8,165,895 and a return conduit |02 connects the by-pass valve deviceto the reservoir 99. The main supply conduit |04 leads from the by-passvalve device to a control valve box |05. As shown' in Fig. 9, theby-pass valve device .|02 comprises a valve box |08 having a passage |01connecting the conduit |00 to the conduit |04. A parallel a: 1 |00communicates with the conduit III and is connected by a passage |09 tothe :s: Formed in the valve box is a chamber ||0 communicating with theconduit |02 and connected by a passage to the passage |05. The passages|09 and are controlled by end seating valves II2 and II3 respectively,having a pivoted control lever I I4. .when the valves I I2, I I3 are inthe position shown in Fis. 9', passages |01, |00 are connected togetherby the passage |00 so that both conduits |00 and IIII communicate withthe conduit |04. When the control lever I I4 is swung into its' oppositeposition, the passage |05 is cl by the valve |I2, while the 'passage isope .so that the.conduit |0| communicates with the return conduit |03through passage and .chamber IIII and the. conduit '|00 communicatesthrough. the passage |01 with the conduit |04. Again referring to Fig.il, it will be noted that the control valve box |05 has parallelvertical bores ||5 containing rotary control valves I I5 and- I frespectively, each having a manual control hanv30 K vnected by a supplypassage ||8 with which the dle. 'I'he lower ends of the valve bores areconbers 10, 69 inthe block 51', 65, respectively, (see 'L 'I'he hoisting-ca'bles 50 and 5| are then extended also Fig. 6) with the bore of thevalve ||5. The valve controls the supply of liquid pressure to theanchor jack cylinders, and the valve bore is connected by a conduit |22and branch conduits |22 to theupper ends of the anchor jack cylinders,while the valve bore is connected through a conduit |24 and branchpassages |25 to the lower ends of the anchor jack cylinders. When thevalve IIB is in the position shown in Fig. 8, 4liquid under pressure mayow 'from the, `supply passage I I8 through a passage on the valve IIS,conduit |20, chamber 10, tubular rod 50 and passage 'I9 in the piston 62to the lower end of the clutch control cylinder 0|, thereby to eiIectup'- ward movement of the piston 52 to apply the liriction clutch 54 forthe upper hoist drum 40, while the upper end of the cylinder 5| isconnected to exhaust through passages 00, tubular rod 52, chamber 69,conduit |2| anda passage on the. valve ||6 communicating with thedischarge passage IIB. When the position of the valve' III is reversed,liquid under pressure may iiowztrom the supply passage ||8 through avpassage on theA valve IIB, conduit |2|, chamber 69, tubular rod G3 andpassages 80 to the upper end of the hydraulic cylinder 6I to veffectdownward movement of the piston 62 to apply the friction clutch 55 forthe lower hoisting drum, while the lower end of the cylinder 6| `isconnected through e IIT.-

chor jack pistons in an anchoring position, while the upper ends o! theanchor jack cylinders are connected through the branch conduits |22,con- -duit |22 and a e on the valve to the discharge e III. When theposition of the valve ||1 is reversed, liquid under pressure may ow fromthe supply e III through a passage on the valve, conduit |22 and branchcon duits |22 to the upperV ends of the jack cylinders to effectdownward movement of the anchor jack pistons into their releasedposition, while the lower ends of the jack cylinders are connectedthrough branch` conduits |25, conduit |24, a passage on the valve to thedischarge passage ||0. When the valves III, III are moved into theirclosed position, the liquid is trapped in the cylinders, and when liquidilow through the supply conduit |04 is cut on by the valves Ill, Ill,the liquid discharged from the pump is by-pass'ed through the by-passvalve device back to the res'- Vervoir 5 5. When both conduits |00and|0| are connected with the conduit |04, the pressure in the hydraulicsystem is, of course, increased, since liquid is pumped at that timefrom both discharge chambers of the pump. 1 s' The ge'neral mode of useof `the improved hoisting mechanism will be clearly apparent from thedescription given. 'I'he hoisting mechanism is propelled about the mineover the mine floor by the endless track-laying treads under the controlof the i'rictionally controlled planet gears ofthe change speed'mechanism at the desired Ispeed. When the working place is reached, the-hoisting mechanism is rigidly jacked in a stationary operating positionagainst the mine iloor by means of the hydraulic anchor jacks engagingan extraneous abutment such'as the mine roof.

from the hoisting drums 45 and 4! tothe drag scraper mechanism to bemoved thereby, and one Yor the other ofthe friction clutches 54, 55 isapplied to cause one cable to be wound in by its' drum while the othercable is paid out by its drum. Other uses and advantages of the improvedhoisting mechanism will be clearly apparent to those skilled in the art.Y

.While there is in this application speciilcally described one formwhich the invention may assume in'practice, it will be understood thatthis form of the same is shown for purposes of illustration and that theinvention may be modiiled and embodied in various other forms withoutdeparting from. its spirit or the scope oi theap-V pended claims.. 4

What I claim as new and desire to 'secure by Letters Patent is:

l. In a hoisting mechanism, a base, relatively rotatable hoisting drumsmountedon .said base, a motor on said base,l means driven by said motorfor driving said drums, Va hydraulic pump driven by said motor, andhydraulic means operated by pressure iiuid discharged from. said pumpfor controlling the connection of said drums with saiddrumdriving means.

2. In a hoisting mechanism, a base, relatively rotatable hoistingdrumsarranged in superimposed coaxial relation on said base, a'motoron saidbase, means driven by. said motor for driving said drums, a hydraulicpump driven by said motor, and hydraulically operated means .oper- Vandmeans for operating said clutches including clutch operating connectionsarranged coaxially with said tubular drive shaft, and motor meansarranged at least in part within said tubular shaft for actuating saidcoaxial clutch operating connections.

4. In a hoisting mechanism, relatively rotatable cable windlng drums, `atubular drive shaft coaxial therewith, friction clutches for selectivelyconnecting said drums in driving relation with said tubular drive shaft,and hydraulically operated means for operating said clutches including acylinder arranged coaxially with said tubular drive shaft andarrangedfat least in part within the latter, and a clutch operatingpiston reciprocable within said cylinder;

5. In a hoisting mechanism, relatively rotatable cable winding drums, atubular drive shaft coaxial therewith, clutches for selectivelyconnecting said drums in driving relation with said tubular drive shaft,hydraulically operated means for operating said clutches including acylinder arranged coaxially with said tubular drive shaft at one'end ofthe latter and a clutch operating piston reciprocable within saidcylinder, and a connection at the 'opposite end of said shaft forconducting hydraulic pressure from a source of pressure supply to saidcylinder.

6. In a hoisting mechanism, relatively rotat-v able cable winding drums,a tubular drive shaft coaxial therewith, clutches for selectivelyconnecting said drums in driving relation with said tubular drive shaft.hydraulically operated means including a cylinder arranged coaxiallywith said tubular drive shaft at one end of the latter and a pistonreciprocable within said cylinder and having a piston rod extendingcentrally within said shaft for operating said clutches, and aconnection at the opposite end of said shaft for supplying hydraulicpressure -to said cylinder and including passage means formed in saidpiston rod.

7. In a 'hoisting mechanism, a frame having a horizontal top surface,a'drive shaft arranged on a vertical axis and journaled in said frame.the upper end portion of said shaft projecting above the top surface ofsaid frame, a pair of relatively ,rotatable cable winding hoisting drumsarranged in superimposed coaxial relation above the top surface of saidframe, said drums having hoisting cables respectively wound thereon,said drums surrounding and journaled on the upwardly projecting portionof said shaft, a driving gear arranged within said frame for drivingsaid shaft, friction clutches arranged within said drums and operable atwill for connecting said drums to said shaft for driving thereby.

8. In a hoisting mechanism, ay portable base having traction means, theforward portioni of said base projecting horizontally in advance of saidtraction means, a pair of relatively rotatable cable winding hoistingdrums arranged in superimposed coaxial abutting relation on the top ofsaid forwardly projecting base portion, said drums having hoistingcables respectively Wound thereon, a motor on said base, means driven bysaid motor for driving said drums including a vertical drive shaftjournaled within said projecting base portion and having a portionprojecting upwardly above the top of said projecting base portion,bearing means for journaling said drums on said projecting shaftportion, and friction'clutches within said drums and operable Vat willfor only alternately connecting the latter to said shaft for drivingthereby.

JOSEPH F. JOY.

